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And spending more than 20 years of his life behind bars has taken its toll.

"I spent from 10 to 15 in secure units then 15 to 31 in prison it left me with mental health problems I never killed anyone I was just brought up wrong," he said.

Vincent Smith inside Gloucester Prison (Image: Vincent Smith)

And a large part of his life is been spent in HMP Gloucester.

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"I spent every year from 1996 up to when it closed," he said. "The last five years I have been sorting myself out I just keep having slip ups or old stuff come back and with my record it doesn't look good."

Perhaps surprisingly he has joined the hundreds of people to take a tourist tour of the prison, head around the wings and cells which were so familiar to him.

Vincent Smith inside Gloucester Prison

He even managed to find the brick he carved during a stay in prison in 1998 when, at 15 years old, he was the youngest person being held there.

Vinny's name on a brick in Gloucester Prison

He also visited one of his old cells, discovering an old crisp packet hidden high above the doorway. In another video he tours the corridors of the wing, pointing out all the canteen and admitting he had stayed in most of the cells in the corridor at one point or another.